Coal breaker



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APPLICATION FILED DEC. 30| 192i. v

2 SHEETS-SHEET i.

Patented Nov. 14, 1922.

INVENvT-OR Haq/vh BqRDEE BY '0 ,l 3; Q u... A ATT RNEY F. PAHDEE.

COAL BREAKER. APPLlcmon msu nec. 3o. 192|.

1,435 ,330. Patented Nov. 14, 1922.

2' SHEETS-SHEET l2.

y INVENTOR FRIQNK PARDE'E n. lATTORTIJEY Patented New. i4, l'l

rannte rennen, or ernannten, rnmvsvrvnnrn.

COAL BREAEB.

Application led. December 30,. 1921. Serial' No. 525,S,63.

To @ZZ whom fmay concerten i Be :it knownl that 1 FRANK Farmen, a citizen `ot ,the United States, and resident ot Hazleton, Pennsylvania, have invented certain new and useful improvements in Coal Breakers, of which the following is a speci- .icaton.

This invention relates to coal breakers and y.particularly lto :theconstruction of cutting rolls used therein. 4 y 1 y lOne,,obje-ct cifthe invention is to provide means for supporting the lumps, in such a Way. that they will not allb'etween the discs of the roll While being carried to breaking position I vAnother object is to provide an anvil roll which is composedloi'f a plurality of disclike members having Widel supporting` iianges adapted to carry the lumps of: coal Ato the `breaking position. Y l Y A further object is vto provide apair oi co-.acting rolls having cutting' edges arranged so that lumpso-'coal will be severed -along-two diiieient cleavage planes. K

@ther objects Will be apparent from the vfollowing specification when :read in connection with ,the accompanying.drawings in Which- Fig. i is a vertical section shovfingfthe Vcutting rolls oit a coal 'breaker embodying features oi .the invention;

Fig. 2 is a top planet a portion of a coal .breaker; y y y* Fig. 3 isa diagrammatic section showing a Jceding device ytor delivering the lumps to he breaker; y

Fig. 4 is a detail perspective showing the improved form of tooth-for 4the-anvil roll hav-ing a avide supporting formed thereon; p

Fig. 5 is view similar to Fig. 4 showing a tooth yornodiiied vconstructicm having a 'wide cutting edge.

Referring to the drawings the shafts l() and l2 support respectively the anvil roll i4 and the cutter roll 1 6, these. shafts 4being carried in suitableA bearingslS and 2O supported by side trames 22. The rolls i4 and 16 are geared together'byrneans of spur gears 24 and 26 and are driven from any suitable sourcevoi power, not shown.

The anvil roll i4 is constructed of a. plurality of discs 28 which are arranged alongside of each other on the shaft-,10 and held in proper spaced relationship by means of separating collarsBO. y. The several discs and collars are secured together by means of .longitudinally extending througlibolts 32 and the assemblage is secured to theshait 10 by a key 34. y i l ,Y Each'disc'28 `is formed with anumber of teeth' having .cutting-edges 38- formed on one extremity thereof.V The heel portion-40 oleach tooth is formed with oppositely extending flanges 42, as best shown in Fig. 4.

f The roll i6 comprises a Lplurality of discs 44 Which are substantially in alignment *it/'ith the discs 28 oi the anvil'roll, Fig. 2. The

discs 44 are spaced apart by collars 46 and secured to one another by through-bolts .48 and held by a key 50 to the shaft 12. The

discs 4.4 are provided with teeth 52, the ends .of which are rounded kas` at 54 andthe heel portions 56 oi Which arevconcave in side elevation, Fig. 3. Adjacent the. ,outer ,end 54 ci each tooth the discis undercut asshown at 58. The teeth '5 6 are .bevelledfas'at 60 to form comparatively sharp `cutting edges 62 Which startlat the-end `54. of the teeth andV extend. throughout the `length 'of the heels thereof.v Y l The lumps ot coalL may be ted to the ybreaker in'any approved manner in feras the vpresent inventionqis concerned',b'ut "l prefer to feed 'them in suchtmanner that 'their greatest length'extends Vsubstantially in the same direction as theaXis otrotation .of-the rolls. The lumps can `be conveniently ted in this manner by means of'a spiral feeding device as disclosed in my co-pendingy application No. 388,462, tiled January l2, 1920, and illustrated here".diagrammatically in Fig. 3, in which the spiral "feeder 64 `is mounted .to rotate on a horizontal axis above f theV anvil. roll 28 and isrotatedso that the lumps if will `be deposited on the flanges` 42 4et the .anvil roll, the feeder being provided lwith long Atongues 55 Which pass through the spaces 68 between the discs as they rotate.

. In Fig. 5 I have showna slightly modified hforno ot tooth for one of the anvil discs 28 in which the flange: 42 on the heel of the tooth is carried'around kthe peripheral end of the tooth in the form ot a iiange 43 to form a longitudinal cutting edge 39 Vwhich is considerably longer` than the cutting edge 38 shown in Fig. 4'. y

in coal breakers of this general type heretofore used the lumps ot coal have been ted to the lanvil roll in such way that they would be apt to straddle two or more ofthen comparatively narrow anvil discs. An objection to such an arrangement is that certain of the lumps are very apt to fall down between the adjacent anvil discs so that they never carried to proper breaking position to be acted upon by the cutting roll. The present invention is intended to provide means tor overcoming this objection.

By forming the discs of the anvil roll with longitudinally extending flanges 42, as above described, a wide supporting area is provided to which the lumps of coal can be fed and the discs can be so spaced on the shaft l() that the space 68 is so arranged as to prevent tipping of pieces which are to be broken.l With an anvil roll constructed of discs having the wide supporting flanges it is not necessary that the lumps be fed to the breaker so that they straddle two adjacent discs, as the dang-es provide generous support for the individual lumps. ln addition there is less likelihood for the lumps to fall endwise between the discs when they are supported on their wide flanges as suoli flanges present a greater frictional drag on the lumps than that exerted by narrow 'faced discs heretofore used. i

Asthe lumps are carried down into the bite or" the two rolls they are subjected to what may be called a double-breaking action. It is 1known to those skilled in the art that most coal has yat least vtwo cleavage planes along which it can be readily cut or splitj these planes being substantially perpendicular to each other. The rolls of this breaker are particularly adapted to` take advantage loff this inherent quality of the coal. To these ends'the discs lll are provided with the bevelled surfaces t() forming the cutting edges 62 which are adapted to cut or split the lumps of coal along fthe axis X, Fig. 2, the lump being held at this time by one of the teeth 40 of the anvil roll. The longitudinal edge 3S is also adapted to cut or split the lump along a plane indicated by the dotted line Y in Fig. 2.

A coal breaker constructed as herein described eiiiectively sizes the coal with a minimum production of fines, the action being of a cutting or splitting nature rather than a crushing action. The advantages of which will be apparent to those skilled in the art.

Though I have described with great par ticularity the details of construction of the embodiment herein shown yet it is not to be interpreted that I am limited thereto as structural changes and modifications may be made without departing from the invention as set forth. in the appended claims.

lNhat I claim is:

l. ln a coal breaker a disc havingk flanged teeth formed thereon to provide a vwide supporting area to prevent the lumps from falling off the face of the disc.

2. ln a coal breaker a disc having cutter teeth formed with flanges adapted to support and carry the lumps to breaking position.

3. ln a coal breaker a ydisc having undercut teeth each tooth having a longitudinal cutting edge at its extremity, the heel portion. of each tooth having longitudinal flanges to providea wide supporting surface for the lumps fed to the breaker.

il. In a coal Abreaker an anvil roll comprising a plurality of discs arranged alongside one another, each dischaving flanged teeth adapted to form wide supporting surfaces for the lumps -fed to the breaker.

5. In a coal breaker' a pair of opposed rolls, one of which comprises a plurality of discs having teeth formed with flanges adapted to support the lumps and prevent them from falling between the discs as they are carried to breaking position, the other roll comprising discs having cutting edges which engage they lumps supported on said anges. f

6. In a coal breaker a pair of opposed rolls, one of said rolls comprising a plurality of toothed discs having supporting flanges adapted to support the lumps and hold them in proper position so they will not fall `between the discs, said discs having longitudinalcutting edges adapted to cut said lumps longitudinally, the other roll comprising a plurality of toothed discs having cutting edges adapted to cut said lumps transversely.

ln witness whereof. l have hereunto signed my naine. A

raamt Pannen. 

